Maryland Public Safety Section 13-811
§ 13-811.
  (a)   No excuse is valid for absence from an assembly except:
    (1)   good faith absence from the place where the assembly is ordered;
    (2)   illness of the individual that prevents the individual's attention to ordinary pursuits;
    (3)   sickness in the individual's family that requires the individual's personal care and presence; or
    (4)   any other reason that the court finds satisfactory.
  (b)   No excuse is valid for absence from an annual inspection except:
    (1)   illness of the individual that would prevent attendance; or
    (2)   illness in the individual's family that requires the individual's personal care and presence.